Chemistry: The Molecular Nature of Matter and Change - Standalone book
Chemistry: The Molecular Nature of Matter and Change - Standalone book
7th Edition
ISBN: 9780073511177
Author: Martin Silberberg Dr., Patricia Amateis Professor
Publisher: McGraw-Hill Education
Question
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Chapter 15, Problem 15.20P

(a)

Interpretation Introduction

Interpretation:

The name of the given compound has to be given.

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  1

Concept Introduction:

The hydrocarbons which contain only single bonds are said to be Alkanes.  The general formula for alkanes can be given as CnH2n+2.  All carbon atoms are sp3 hybridized.

The Alkanes are named following some rules:

  • The name of the alkane is given by the number of carbon atoms present in the chain.  It is said to be Root of the alkane.

Root = number of carbon atoms in chain.

  • To name the root, for one carbon atom, the root name use is meth-.  For two carbon atoms, the root name is eth-, for three carbon atoms, it is prop-, for four carbon atoms, it is but-, for five carbon atoms, it is pent- and so on.
  • The root name is followed by Suffix.  Suffix indicates the functional group present in the compound.  It is placed after the root name.

Suffix = name of the functional group present in the compound.

  • The root name also contains Prefix.  Prefix is the groups attached to the root.  It indicates the branched carbon atoms on the root chain and name according to the root specifying the carbon number on which it is placed.  It contains –yl in name end.  The prefix is placed before the root name.

Prefix = name of the branched carbon atoms on chain.

  • The name of the alkane is given in the form

Prefix + Root + Suffix

(a)

Expert Solution
Check Mark

Explanation of Solution

The given compound is

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  2

To give the compound a systematic name, first the root has to be identified.  The root consists of number of carbon atoms present in the longest chain.  In the given compound, the longest chain contains four carbon atoms.  Hence, the name but- is used as the root.  The carbon chain is numbered in the way that the substituents get the lowest number.

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  3

As the given compound contains only single bonds, it is an alkane.  For alkanes, the suffix used is –ane.  The suffix is added to the root name.

The given compound contains branched carbon atom.  It contains one carbon atom (-CH3) in branch, so the name methyl- is used as prefix along with the carbon number in the chain on which the branched group is located.

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  4

The systematic name of the given compound is

Root = but-

Suffix = -ane

Prefix = 2-methyl-

The name of the given compound is given as 2-methylbutane.

(b)

Interpretation Introduction

Interpretation:

The name of the given compound has to be given.

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  5

Concept Introduction:

The hydrocarbons which contain only single bonds are said to be cycloalkanes.  The general formula for alkanes can be given as CnH2n.  All carbon atoms are sp3 hybridized.

The cycloalkanes are named following some rules:

  • The name of the alkane is given by the number of carbon atoms present in the ring.  It is said to be Root of the alkane.

Root = number of carbon atoms in ring.

  • To name the root, for one carbon atom, the root name use is meth-.  For two carbon atoms, the root name is eth-, for three carbon atoms, it is prop-, for four carbon atoms, it is but-, for five carbon atoms, it is pent- and so on.
  • The root name is followed by Suffix.  Suffix indicates the functional group present in the compound.  It is placed after the root name.

Suffix = name of the functional group present in the compound.

  • The root name also contains Prefix.  Prefix is the groups attached to the root.  It indicates the branched carbon atoms on the root chain and name according to the root specifying the carbon number on which it is placed.  It contains –yl in name end.  The prefix is placed before the root name.

Prefix = name of the branched carbon atoms on chain.

  • The name of the alkane is given in the form

Prefix + Root + Suffix

(b)

Expert Solution
Check Mark

Explanation of Solution

The given compound is

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  6

To give the compound a systematic name, first the root has to be identified.  The root consists of number of carbon atoms present in the ring.  In the given compound, the ring contains six carbon atoms.  Hence, the name hex- is used as the root.  The carbon ring is numbered in the way that the substituents get the lowest number.

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  7

As the given compound contains only single bonds, it is an alkane.  For alkanes, the suffix used is –ane.  The suffix is added to the root name.

The given compound contains branched carbon atoms.  It contains one carbon atom (-CH3) in branch, so the name methyl- is used as prefix.  As it contains three methyl groups, trimethyl is added as prefix along with the carbon number in the chain on which the branched groups are located.  As three methyl groups are placed on carbon1,3 and 5, 1,3,5-trimethyl is used as prefix.

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  8

The systematic name of the given compound is

Root = cyclohex-

Suffix = -ane

Prefix = 1,3,5-trimethyl-

The name of the given compound is given as 1,3.5-trimethylcyclohexane.

(c)

Interpretation Introduction

Interpretation:

The structure of the given compound (1,2-diethylcyclopentane) has to be drawn.

Concept Introduction:

The structure of the compound is given by its systematic name.

To give the structure from the name of the compound, the root name has to be identified.  The root name indicates the number of carbon atoms present in the longest chain.

Then the functional group (suffix) has to be identified.  It indicates whether any functional groups are present in the compound, it also gives whether the compound is an alkane or alkene or alkyne.

The prefix of the name indicates the branched groups and their positions on the carbon chain.

The name of the compound is in the form

Prefix + Root + Suffix

(c)

Expert Solution
Check Mark

Explanation of Solution

The compound given is 1,2-diethylcyclopentane.

To give the structure of 1,2-diethylcyclopentane, first the root name has to be identified.  The root name indicates carbon atoms in ring.  In the given compound, the root name is cyclopentane.  As the suffix is –ane, it is an alkane and contains only single bonds.  Cyclopentane consists of five carbon atoms in ring.

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  9

As the name is 1,2-diethylcyclopentane, it contains prefix 1,2-diethyl.  The ethyl group contains two carbon atoms (-CH2CH3).  It indicates that the carbon chain is substituted at two positions.  The substituent groups are ethyl groups.  As both substituents are ethyl groups, diethyl is used in prefix.

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  10

The structure of 1,2-diethylcyclopentane is given as

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  11

(b)

Interpretation Introduction

Interpretation:

The structure of the given compound (2,4,5-trimethylnonane) has to be drawn.

Concept Introduction:

The structure of the compound is given by its systematic name.

To give the structure from the name of the compound, the root name has to be identified.  The root name indicates the number of carbon atoms present in the longest chain.

Then the functional group (suffix) has to be identified.  It indicates whether any functional groups are present in the compound, it also gives whether the compound is an alkane or alkene or alkyne.

The prefix of the name indicates the branched groups and their positions on the carbon chain.

The name of the compound is in the form

Prefix + Root + Suffix

(b)

Expert Solution
Check Mark

Explanation of Solution

The compound given is 2,4,5-trimethylnonane.

To give the structure of 2,4,5-trimethylnonane, first the root name has to be identified.  The root name indicates carbon atoms in longest chain.  In the given compound, the root name is nonane.  In nonane, nine carbon atoms are present in the chain.  As the suffix is –ane, it is an alkane and contains only single bonds.  The structure of nonane is given as

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  12

As the name is 2,4,5-trimethylnonane, it contains prefix 2,4,5-trimethyl.  It indicates that the carbon chain is substituted at three positions.  The substituent groups are methyl (-CH3) groups.  The number of the carbon on which the substituent group is present is mentioned.  The substituents are attached to the base structure.

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  13

The structure of 2,4,5-trimethylnonane is given as

Chemistry: The Molecular Nature of Matter and Change - Standalone book, Chapter 15, Problem 15.20P , additional homework tip  14

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Chapter 15 Solutions

Chemistry: The Molecular Nature of Matter and Change - Standalone book

Ch. 15.4 - Prob. 15.4BFPCh. 15.4 - Prob. 15.5AFPCh. 15.4 - Prob. 15.5BFPCh. 15.4 - Prob. 15.6AFPCh. 15.4 - Prob. 15.6BFPCh. 15.4 - Prob. 15.7AFPCh. 15.4 - Prob. 15.7BFPCh. 15.6 - Prob. B15.4PCh. 15.6 - Prob. B15.5PCh. 15 - Prob. 15.1PCh. 15 - Prob. 15.2PCh. 15 - Prob. 15.3PCh. 15 - Silicon lies just below carbon in Group 4A(14) and...Ch. 15 - What is the range of oxidation states for carbon?...Ch. 15 - Prob. 15.6PCh. 15 - Prob. 15.7PCh. 15 - Define each type of isomer: (a) constitutional;...Ch. 15 - Prob. 15.9PCh. 15 - Prob. 15.10PCh. 15 - Prob. 15.11PCh. 15 - How does an aromatic hydrocarbon differ from a...Ch. 15 - Prob. 15.13PCh. 15 - Prob. 15.14PCh. 15 - Prob. 15.15PCh. 15 - Prob. 15.16PCh. 15 - Prob. 15.17PCh. 15 - Prob. 15.18PCh. 15 - Prob. 15.19PCh. 15 - Prob. 15.20PCh. 15 - Prob. 15.21PCh. 15 - Prob. 15.22PCh. 15 - Prob. 15.23PCh. 15 - Prob. 15.24PCh. 15 - Draw structures from the following names, and...Ch. 15 - Prob. 15.26PCh. 15 - Prob. 15.27PCh. 15 - Prob. 15.28PCh. 15 - Prob. 15.29PCh. 15 - Prob. 15.30PCh. 15 - Prob. 15.31PCh. 15 - Prob. 15.32PCh. 15 - Prob. 15.33PCh. 15 - Prob. 15.34PCh. 15 - Prob. 15.35PCh. 15 - Prob. 15.36PCh. 15 - Prob. 15.37PCh. 15 - Prob. 15.38PCh. 15 - Prob. 15.39PCh. 15 - Prob. 15.40PCh. 15 - Determine the type of each of the following...Ch. 15 - Prob. 15.42PCh. 15 - Prob. 15.43PCh. 15 - Prob. 15.44PCh. 15 - Prob. 15.45PCh. 15 - Prob. 15.46PCh. 15 - Prob. 15.47PCh. 15 - Prob. 15.48PCh. 15 - Prob. 15.49PCh. 15 - Prob. 15.50PCh. 15 - Prob. 15.51PCh. 15 - Prob. 15.52PCh. 15 - Prob. 15.53PCh. 15 - Prob. 15.54PCh. 15 - Prob. 15.55PCh. 15 - Prob. 15.56PCh. 15 - Prob. 15.57PCh. 15 - Prob. 15.58PCh. 15 - Prob. 15.59PCh. 15 - Prob. 15.60PCh. 15 - Prob. 15.61PCh. 15 - Prob. 15.62PCh. 15 - Prob. 15.63PCh. 15 - Prob. 15.64PCh. 15 - Prob. 15.65PCh. 15 - Prob. 15.66PCh. 15 - Prob. 15.67PCh. 15 - Prob. 15.68PCh. 15 - Prob. 15.69PCh. 15 - Prob. 15.70PCh. 15 - Prob. 15.71PCh. 15 - Prob. 15.72PCh. 15 - Prob. 15.73PCh. 15 - Prob. 15.74PCh. 15 - Prob. 15.75PCh. 15 - Prob. 15.76PCh. 15 - Prob. 15.77PCh. 15 - Prob. 15.78PCh. 15 - Prob. 15.79PCh. 15 - Prob. 15.80PCh. 15 - Prob. 15.81PCh. 15 - Prob. 15.82PCh. 15 - Prob. 15.83PCh. 15 - Prob. 15.84PCh. 15 - Prob. 15.85PCh. 15 - Prob. 15.86PCh. 15 - Prob. 15.87PCh. 15 - What is the key structural difference between...Ch. 15 - Protein shape, function, and amino acid sequence...Ch. 15 - What linkage joins the monomers in each strand of...Ch. 15 - What is base pairing? How does it pertain to DNA...Ch. 15 - RNA base sequence, protein amino acid sequence,...Ch. 15 - Prob. 15.93PCh. 15 - Prob. 15.94PCh. 15 - Draw the structure of each of the following...Ch. 15 - Prob. 15.96PCh. 15 - Write the sequence of the complementary DNA strand...Ch. 15 - Prob. 15.98PCh. 15 - Prob. 15.99PCh. 15 - Prob. 15.100PCh. 15 - Prob. 15.101PCh. 15 - Amino acids have an average molar mass of 100...Ch. 15 - Prob. 15.103PCh. 15 - Prob. 15.104PCh. 15 - Some of the most useful compounds for organic...Ch. 15 - Prob. 15.106PCh. 15 - Prob. 15.107PCh. 15 - Prob. 15.108PCh. 15 - Prob. 15.109PCh. 15 - Prob. 15.110PCh. 15 - Prob. 15.111PCh. 15 - Prob. 15.112PCh. 15 - The polypeptide chain in proteins does not exhibit...Ch. 15 - Prob. 15.114PCh. 15 - Prob. 15.115PCh. 15 - Prob. 15.116PCh. 15 - Prob. 15.117PCh. 15 - Wastewater from a cheese factory has the following...Ch. 15 - Prob. 15.119P
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